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    <title>Document</title>
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    <script>
      // 创建一个猪 构造函数
      function Pig(uname, age) {
        this.uname = uname;
        this.age = age;
      }

      // console.log(new Pig('佩奇', 6))
      // console.log(new Pig('乔治', 3))
      const p = new Pig("佩奇", 6);
      console.log(p);

      //  const papa = { uname: '佩奇', age: 6 }

      // const obj = new Object()

      function Goods(name, price, count) {
        this.name = name;
        this.price = price;
        this.count = count;
        this.sayhi = function () {};
      }
      const mi = new Goods("小米", 1999, 20);
      console.log(mi);
      const hw = new Goods("华为", 3999, 59);
      console.log(hw);
      console.log(mi === hw);
      mi.name = "vivo";
      console.log(mi);
      console.log(hw);
      // const date = new Date('2022-4-8')
      // console.log(date)

      // 静态成员
      Goods.num = 10;
      console.log(Goods.num);
      Goods.sayhi = function () {};
    </script>
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